Mathematical Expression Retrieval Method Based on Operator Information

• Published in: Jisuanji gongcheng
• Main Author: XU Yicong, TIAN Xuedong, ZUO Lina
• Format: Article
• Language: English
• Published: Editorial Office of Computer Engineering 2020-04-01
• Subjects: mathematical expression retrieval|operator information|formula description structure(fds)|latex system|similar expression
• Online Access: https://www.ecice06.com/fileup/1000-3428/PDF/20200411.pdf
• ISSN: 1000-3428

Traditional text retrieval technology is mainly for one-dimensional text,and can hardly retrieve two-dimensional structural mathematical expressions.To solve the problem,a mathematical expression retrieval method based on operator information is implemented by introducing the Formula Description Structure(FDS).The method uses the extraction algorithm for FDS to obtain the node information of LaTeX mathematical expression,so as to obtain its skeleton storage structure.On this basis,the nodes with an operator value of 1 and their related documents are selected for indexing,and a set of expressions similar to the input is obtained by mathematical expression matching algorithm.Experimental results show that,this method can quickly and accurately find similar expressions from 519 588 mathematical expressions,and is not affected by the general operands.